Frederick was historically not a fan of the female gender. Part of this came from the fact that, as a way of getting out of the prison his father had thrown him in, he agreed to marry the woman of his family’s choosing: a dullard who didn’t remotely understand Frederick’s intellectual interests. Then there was the influence of his friends, who wrote Enlightened tracts Scientifically Demonstrating that ‘female brains are 30% smaller than male, and composed primarily of quicksilver, which is of course unreliable…’ and other such charming bits of salon trivia….
Peter and Frederick were actually in similar situations. Peter also was wedged into a marriage with a generally good person whose only problem was Not Quite Getting what Peter was trying to do. He was a thorough dick to her, eventually forcing her into the convent which, by Russian custom, was equivalent to a divorce, allowing him to remarry a hot peasant woman. He was constantly unfaithful, though in later life he would berate his own son when the lad put his mistress before his wife. By contrast, Frederick stayed married, but just never talked or had anything to do with his wife pretty much ever. Who was the bigger dick?
– Count Dolby von Luckner